The behaviour of electromagnetic waves of depends on their wavelengths. As a result the critical angle for refraction changes according to the wavelength.
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A protractor is used to measure an angle.
There are 90 degrees in a left angle as there are in a right angle but the term 'left angle' is rarely used
The answer will depend on the units used for 600 by 600. Inches? Micrometres?The answer will depend on the units used for 600 by 600. Inches? Micrometres?The answer will depend on the units used for 600 by 600. Inches? Micrometres?The answer will depend on the units used for 600 by 600. Inches? Micrometres?
angle- side angle
An angle ruler is a tool used to measuring angles like a protractor. An angle ruler is more accurate than a protractor.